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  In what order should I proceed to create my specialization courses?

First you generate:
1/ the specialization programs,
2/ then the specialization groups,
3/ before generating the specialization courses.

The import of subjects, students and classes must have been carried out beforehand (the import of teachers is not compulsory, but is recommended to optimize the allocation of groups to classes at the end of the process); the distribution of students in the classes takes place when the specialization groups are created.